Improvement in door-latches



' To allya/'hom it may concern.-

.spindle of the knobs with the latch in such a x turning the same as hitherto, the advantage of which will be hereinafter explained.

. which is of the usual rectangular form, and B far to admit of the end of the basil a being lsaid spring is fitted on avertical pin, b, on the :-latch. .The innergpart of the latch B is made and the outer end of the loop at its inner side -'is beveled, as shown clearly atc in' Fig. 3.,

UNrrnn STATES PATENT @inicia iMPaovEMENT IN Dooa-LATcHEs.

Specification forming part of Letters Patent N0. 37,386, dated Januarylli, 1863.

. Be itkuown that I, FRANKLIN M. CnossEtrT, of Piermont, in the county of Rockland and State of New York, have invented a new and useful Improvement in Locks and Latohes; and I do. hereby declare that the following is'y a full, clear, and exact description of the same, reference bein g had to the accompanying drawings, making a part of this specification, in whichv Figure l is 4an internal view of a latch constructed according to my invention 5 Fig. 2, a horizontal sectionv of the same applied to a door; Fig.v 3, ahorzontal section of the'same, taken in the line y y, Fig. l.

Similar letters of reference indicate corresponding parts in the several iigures.

This invention consists in arranging the manner that the latch ,will be operated--that is to say, drawn within its case by a longitudinal sliding movement of the arbor instead of To'enable those skilled in the art to fully understand and construct my invention@ will proceed to describe it. l

A represents the case of a latch or` lock,

is the latch which is fitted within the case A, and is provided at its outer end land at one side with the ordinary basil or bevel c. The latch B is allowed to slide freely in the case' A, sqthat it may be drawn inward sufficiently flush with the end of the case A, as shown in red outline in Fig.' 2, and a spiral spring, C, is connected with the latch, said lspring having a tendency to keep the basil a out from the case A. The spring C is attached at one end to the case A, and the opposite end of in the form of a loop, D, as shown inFig. l,

z E representsthe spindle to which the knobs F are attached. This spindle is of rectangullar form in'its transverse section, and it passes 4through square ,openings in the sides of the I caseA, and is allowed to slide freely in said openings. The spindle'Ealsopasses through the loop D of thelatch B, and said spindle has a projection, d, attached to its right-hand side, which projection is near or in contact with the beveled surface c of theloop D. The edge of the projection d, which is `opposite to the beveled surface c of the loop D, is made in bevel form, so as to correspond or be parallel with c, as shown in Fig. 3.

From the above description it vwill be seen lthat by pressing the spindle E in the direction indicated by the arrow 1 in Fig. 2 the latch B will be forced or moved in the direction indicated by arrow 2, said `result being due to the beveled surface of the projection d acting against the beveled surface c of the loop D, and the basil a will be drawn within the case A and free from the strike or nosin'g, into which it tits when the dooris shut, and when the spindle is relieved from the pressure by which it was tirst actuated the spring U will move the latch B outward to its original position, and also the spindle E.

It is designed to have the latch or lock applied to the door in such a manner that the door will be forced open by the same pressure which causes the latch to be forced into the case to free the basil a from the strike or nos ing, and this application of the latch or lock to the door also admits at the opposite side of the door, the door being pulled open as the spindle is pulled to operate the latch.

The advantage of the invention consists in the facility with which the latch may be op y erated, a simple pressure on theI spindle being only required at one side of the door and a pull at the opposite side. Aperson incarrying any burden which requires `the use of both hands will not be compelled to place it down in order to operate the latch, as is `the case where the ordinary turning spindles are used, for the pressure may be applied to the knob of the spindle at one side of the door by means of the knee or other part of the person, while at the opposite side the pull can be given` by one or two lingers of the hand.

The invention does not involve any additional cost in the construction of latches or Y locks.

Havingtljus described my invention', what, substantially as and fol1 thopurposoherein olam as new, and desire, to secure by Letters set forth. Patenm- A The 100D D, formed at' the inner end of'bhe ERAN KLIN M' CROSSETT' latoh B, and provided with the beveled end' Witnesses: or surface o, in combination with the projec- GEO. W. REED,' tion d on the sliding; spindle, E,'al1 arranged M. S. PARTRHJGE. 

